/*
 * Copyright © 2022 Apple Inc. and the ServiceTalk project authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.servicetalk.concurrent.api;

import javax.annotation.Nullable;

/**
 * Used to distinguish between a real object and a {@link Throwable} from terminal error.
 */
final class ThrowableWrapper {
    private final Throwable throwable;

    ThrowableWrapper(final Throwable throwable) {
        this.throwable = throwable;
    }

    static boolean isThrowableWrapper(@Nullable Object o) {
        return o != null && o.getClass().equals(ThrowableWrapper.class);
    }

    Throwable unwrap() {
        return throwable;
    }
}
